201011200020 has 48 divisors (see below), whose sum is σ = 625368179520. Its totient is φ = 53602986528.

The previous prime is 201011200007. The next prime is 201011200031. The reversal of 201011200020 is 20002110102.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 201011199975 and 201011200011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186120942 + ... + 186122021.

It is an arithmetic number, because the mean of its divisors is an integer number (13028503740).

Almost surely, 2^201011200020 is an apocalyptic number.

201011200020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201011200020 is an abundant number, since it is smaller than the sum of its proper divisors (424356979500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201011200020 is a wasteful number, since it uses less digits than its factorization.

201011200020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372242981 (or 372242973 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 201011200020 its reverse (20002110102), we get a palindrome (221013310122).

The spelling of 201011200020 in words is "two hundred one billion, eleven million, two hundred thousand, twenty".